Type-writing machine.



C. S. NIGKERSON.

TYPE WRITING MACHINE.

APPLIQATION FILED AUG. 7, 1905.

91 3,039. Patented Feb. 23, 1909.

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I 2M W g; 24 $1 @wi arwegoi G. S. NIGKERSON.

TYPE WRITING MACHINE.

APPLICATION FILED AUG. 7, 1905.

91 3,039. Patented Feb. 23, 1909. a SHEETS-SHEET 2.

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O. S. NIGKERSON.

TYPE WRITING MACHINE.

APPLICATION FILED AUG. 7, 1905.

913,039. Patented Feb. 23, 1909.

s SHBETS4SHEET a.

C. S. NICKERSON.

TYPE WRITING MACHINE.

APPLIOATION FILED AUG. 7,-1905.

- 91 3 ,039. Patented Feb. 23, 1909.

6 SHEETS-SHEET 4.

away/x C liar/es 5. Mc/rerson C. S. NIGKERSON.

TYPE WRITING MACHINE.

APPLICATION FILED AUG. 7, 1905.

91 3,039. Patented Feb. 23, 1909.

6 SHEETS-SHEET 6.

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TYPE WRITING MACHINE.

APPLICATION FILED AUG. 7, 1905' 6 SHEETSSHBET 6- 35mm W61): I

g 77 J I, Char/es JAl/c/rensofl flu! m Maw wags! UNITED STATES PATENT OFFICE.

CHARLES'S. NIOKERSON, OF EVANSVILLE, INDIANA, ASSIGNOR TO NICK-ERSON TYPEWRITER I COMPANY, OF RACINE, WISCONSIN, A CORPORATION OF WISCONSIN.

Specification of Letters Patent.

Patented. Feb. 23, 1909.

Application filed August 7, 1905. Serial No. 273,097.

To all whom it may concern:

Be itknown that-I, CHARLES S. NrcKnasoN', a citizen of the United States, of Evansville, inthe county of Vanderberg and State of Indiana, have invented certain new and useful Improvements in Type-Writing Machines; and I do hereby declare that the following is a full, clear, and-exact description thereof, reference being had to the accompanying drawings, and to the numerals of reference marked thereon, which form a part of this specification.

This invention relates to an improved tipe-bar mechanism for typewriting ma- 0 after set forth and more particularly pointed out in the appended claims.

' In a type-bar mechanism embodying my invention, the pivotal axes of the type-bars are arranged in a circular arc concentric with the striking point of the ty e, the typeheads are arranged at equal istances from the said pivotal axes of the type-bars, and the t'pe-barsaresubstantially e ual in length; t e result of this construction eing that the several type-heads swin through equal arcs in striking the paper and act with equal force or impact on the platen.

A type-bar mechanism embracing my invention may be employed with any suitable form of paper supporting, letter spacing and line spacing devices. In the accompan 'ing drawings, such ty e-bar mechanism is i ustrated in connection with a form of pa er is a iew in central vertical section of the main parts of atype-writing machine embodying my invention. Fig. 2 is a sectional plan view,- taken on the indirect line 22 of ig, 3. Fig. 3 is a vertical section showing theconnections for actuating the type-bars, taken on line .3#3 of Fig. 1, looking from the rear forward Fig. 4 is a detail side elevaines, and it consists in the matters hereintion showing the type-bar actuating mechanism only. Fig. 5 is a detail plan section of the frame of the type-bar actuating mechanism, taken on line 55 of Fig. 1. Fig. 6 is a detail perspective view of one of the type-bars, a key-lever and connections between the same. Fig. 7 is an enlar ed detail section, taken longitudinally through the bearings of one of the ty e-bar pivot rods. Fig. 8 is a view in side e evation of a type-head and end of the type-bar to which the same is attached. Fi 9 is a sectional view of the same, taken on lme 9-9 of Fig. 9.

As shown in the said drawings, 1 indicates the platen of the machine which constitutes the support against which the paper rests in the operation of rinting, and 2, 2 indicate the type-bars w ich are arranged in two groups at opposite sides of the printin or impression point of the platen, with their pivotal axes arranged vertically and equi istant from the said printing point, or on a circular arc concentric with said printing point. Type-heads, which are attached to the swinging ends of said type-bars, are located and swing in .the same horizontal. plane, and the t pe-heads on all of the bars are e uidistant rom the pivotal axes of the typears. Said type-bars are, moreover, attached to upright pivot rods 3, 3, which are mounted 1n twosegmental frames located at opposite sides of the machine, and embracing upper and lower segmental frame members 4, 4, 5, 5, whichare referably inclined downwardly and forwarc ly from their rear to their forward ends, and which are provided with bearings for'the upper .and ower ends of said pivot rods. The inner ends of the type-bars which are attached to the pivot rods are located at varying distances vertically from the horizontal plane in which the type-heads swing or, mother words, the inner ends of the type-bars in each group are arranged in different vertical planes, so that the type-bars will swing clear of eachother in the printing operation.

6 indicates a curved or se mental rest for the type-heads againstwhic i the same bear when in their outward'or retracted position and which is concentric with the striking point of the type and preferably at the'same radial distance therefrom as the frame se ments 4 and 5. The type-heads are held against said type-bar rest 6 or at the outward limit of their throw by means of 55 I ".at opposite sides of "the machine-and to springs 7, 7, 7, and are severally thrown inward toward the printing point in rinting by the action of key-levers 8, 8, 8, W ich are located at the lower part of the machine, as hereinafter set forth.

The platen 1 illustrated constitutes part of a paper supporting and actuating device ,shown in my separate application hereinbefore referred to. Said platen consists of a Wheel or disk, arranged horizontally and turning on a vertical axis sald wheel or (llsk having a narrow marginal or working face,

. both t wide enough only to receive the impression of one letter. The platen thus constructed is actuated to move vertically by a platendevice which also gives vertical movement to the aper and which is so constructed that lie platen and the paper havearising and falling movement by which the narrow face of the laten is brought into position for contact t erewith of one or the other of ;the three vertically spaced types with which leach of the several type-heads is provided.- In the paper supporting and actuating dethe paper is fastened by holding screws, in-

dicated at 12, (Fig.1), or otherwise. The drawing illustrates parts of the devices shown in said separate application for giving vertical and oscillatory movement to the pa er supporting segment 11, andfor vertica ly shifting the platen 1, as required for printing from either one of the types on the type-heads and also for giving lette'" space and line s ace movements-to the segment 1 1, and the s eet held thereby, but inasmuch as these parts are fully illustrated and described in said separate application, and constitute no part of the present invention, they need not be herein'more fully described.

Now referring in detail to the-construction of the machine, illustrated, 13 indicates a horizontal base plate of the machine, 14, 14, two uprights which rises-0m the base plate whic the upper andlower frame segments 4 and 5 are attached at their rear ends.

A vertically arranged supporting frame for the key-levers and the mechanism connecting the same with the type-bars, is located transversely of the base plate'and adjacerft to theforward ends of the type-bar shown in Fig 3, said supporting frame consists of two frame uprights 15 15, which rise from the base plate near the side margins of the same, a lower horizontal frame bar 16, to which the forward ends of the lower frame segments 5, 5, are attached, horizontal frame bars 17, 17, extending inwardly from the upper ends of the uprights 15, 15, and frame bars 18, 18, the upper parts of which are upright and extend above and below the horizontal bars 17, 17, and the lower ends of which extend obliquely inward and meet at the center of the front of the frame where they are joined to the upper end of an upright connecting bar 19, which extends downwardly from the center of the bar 16. The ,forward ends of the up er frame segments 4, 4, are attached at their forward ends to the frame bars 18, 18, as clearly seen in lhe key-levers 8, 8,8, are located at the lower part of the machine above the base plate and are preferably arranged in three vertically, separated rows or banks. Said key-levers, are looselyconnected at their rear or inner ends with -a slotted'vertical plate 20 extending across the machineand' l1 zontal frame bar 16. The'plate 20 is shown as attached to a transverse horizontal frame bar 40' attached to two horizontal curved frame arms 41, 41, (Fi s. 1 and 5), which ex-.

tend forwardly fromt e frame uprights 14, 14 and are attached'to the forward ends of the lower frame segments 5, '5, and also to the horizontal frame bar 16. Lifting springs 22 for the key-levers are shown as having the form of leaf-springs attached to the rear face of the plate 21 and pressing at their free rear their upper edges w ch are engaged with the said p ate at the upper ends of the slots therein.

Actuating connections between the several key-levers andthe pivot rods .of the typelevers are provided as follows: -23,-23, 23, indicate horizontally arranged rock-shafts which are arranged with their pivotal axes in the same vertical plane and are pivotally supported at their ends in the members 15, 18 and 19, of the front frame of the machine. Said rock-shafts are provided with forwardly rojecting'cranlearms 24, 24, 24,- which are ocated severally above'or in the same-vertical planes with the several key-levers, :and are connected with the latter by means of connecting rods 25, 25, 25, as clearly seen in Figs. 1r, 3'and 6. Each of the rock-.shafts 23. is provided with an upwardly extending rods 3, 3, are supporte rigid arm 26, which is connected with a laterally extending rigid arm 27 on one of the type-bar pivot rods 3, by means of a connecting rod 28. The arms 26 are extended upwardly and forwardly from the several rock-shafts, so asto avoid interference with superjacent rock-shafts, and said arms are provided with rearwardly bent end portions which extend between two of the rock- 'shafts and to the rear ends of which the connecting rods 28 are pivoted; this construction enabling the pivotal joint between the said arms and connecting rods to be located above the rock-shafts, so that the arms will give a substantially direct endwise movement to the connecting rods or will transmit thereto a minimum amount of vertical movement such as will necessarily take place owing to the movement of the ends of the arms in curved aths or arcs. The retracting springs 7, 7, 7, or the type-bars are herein shown as having the form of straight wire springs which are secured at their lower ends to the outer faces of the bearing segment 5 by means of screws 29, passing through 'eyes in the lower ends of the springs, and pins 30 which hold the springs from turning on the said screw-studs. The upper ends of the springs 7' are arranged to bear 011 the arms 27 o the pivot bars 3, in a direction to throw the 'ty e-heads' outwardly or rearwardly and hold t em normally in contact with the typehead rest 6. The parts last above described are clearly shown in Fig. 6, and so'arranged that when a key-lever Sis depressed the rockshaft 23 will be turned so as to carry the upper end of-the arm 24 thereon outwardly or forwardly'thereby moving the crank-arm 27 ,in the same direction and swinging the free end of the ty elever and the type-head thereon toward t eprinting point, against the action of the spring 7.

Adjustable bearings b which the pivot in the segmental frame-members 4, and 5, are constructed, as shown in Figs. 6 and7, and as fsollows: In the frame segment 4 above and in line with the pivot rod 3, is located an upright pivot screw 31 which passes through said frame segment and is provided at its lower end with a conical point which engages a conical recess in the upper end of said ivot rod. A setscrew 32 is inserted throng the exterior part of the said frame segment so. as to bear upon the pivot pin and thereby hold the same in its adjusted position. The up er end of the pivot in 31 is rovided wit a slot for a screwriverand eing exposed at the top of said .framesegment is easily accessible for adjustment. The set-screw 32, being located at the outer side or face-of the frame segment, is also. readily accessible to-the operator.

At the lowerend of the pivot rod 3 the same hasbearing contact with the-upper end.

with a pin 33 arranged in axial alinement with the pivot rod and which passes through and has bearing in smooth bores or bearing apertures formed in upper and lower, outwardly projecting, lugs 34, 35, on the lower frame segments 5, 5. The u per end ofthe bearing pin 33 is conical an engages a conical bearing aperture in the lower end of the ivot rod. Between a suitable shoulder on t e bearing pin 33 and an upwardly facing surface of the frame segment below it, is arranged a lifting spring 36 which acts onthe pin in a direction to lift the same or ress it upwardly toward the ivot rod. In t 1e par ticular construction i ustrated the bearing pin 33 is made larger at its upper than at its ower part and provided between its larger upper and smal er lower portions with an annular, downwardly facin shoulder 37, while the spring. 36 is of spirally coiled form, and surrounds said pin between the said shoulder and the upwardly facing or top surface of the lug 35. In connection with the spring-pressed, sliding bearing pin, arranged as described, is used a set-screw 33, inserted in the frame segment, and bearing against the pin to hold the same from movement, said set-screw being preferably inserted from the outer face of theframc segment so as to be readily accessible to the operator.

The purpose of the sliding bearing pin 33, arranged as described, is to enable the lower bearing of the pivot rod-to be readily adjusted vertically, it being manifest that the'emloyment of an upright bearing screw at the ower end of the pivot rod would be inconvenient because of the inaccessibility of the lower pivot rod bearings from below the lower frame segment. Inasmuch as the lift ing spring 36 tends to lift the bearing pin and also the pivot rod engaged therewith, it follows that if the set-screws 32 and 38 be loosened, the pivot rod may be raised or lowered by turning the upper pivot screw 31 and that the lifting spring 36 holds the pivot rod firmly pressed against the pivot screw 31, when the latter is either advanced or retracted. After the parts have been adjusted by movement of the pivot screw 31, as described, both said ivot screw and the sliding pivot pin 33 wi l he clamped or held rigidly in position by tightening the set-screws 32 and 38.

The types in the machine illustrated are formed on type-heads 42, 42, more clearly shown in Figs. 8 and 9, which are vertically elongated and each provided with three .types 43, 44, 45, arranged in vertical alinement or one above the other.-- In order to type-bars.

. said flattened portion 46 of thetype bar by carry time the impressions are ma then assuming the position shown in dotted attaching means aflording angularadyustment of the type-head relatively to the type bar. The adjustable attaching means shown consists 0f two screws 47, 47., inserted through horizontal slots 48, 48, formed in the type-head 42 near the opposite ends of the same and extending into the flattened end 46 of the type-bar. the printing faces of the types to be advanced or retracted with respect to the typebar, and also permits the plane of the said faces to be changed with respect to the end of the ty e bar by advancing or retracting either t e up er or the lower end of the typehead relatively to the said upright end of the type-bar. I

n Fig. 2 is shown, in full lines at the left hand side andin dotted lines at the right hand side of the figure, the ribbon spools 49 of the machine, which are supported in forwardly extending brackets 50 attached to the frame uprights 14, said ribbon spools being arranged ,to turn on vertical axes. The ribbon 51 passes from one spool to the other over guides 52 located on the forward ends of the brackets 50, the ribbon assing horizontally and transversely across t e machine at some distance forward of the platen and in such position that the type-heads will strike and the ribbon against the paper at the de, the ribbon 'lines 53 in said Fig. 2. The guides 52, 52, are located laterally outside of the frame segments 4,4, but above the level of the parts of said frame segme ts over which the ribbon pivot rods 3, 3, are

extends, room being aflorded for the passage of the'ribbon by reason of the forward and downward inclination of the said frame seg ments.

As hereinbefore stated, the inner ends of the type-bars which are attached to the located at progressively increasing distances from the horizontal plane in which the type-heads swing in order 7 to permit the type-bars in each group to pass each other without interference in the operation thereof. The innermost or rearmost the pivot rods located nearest the said horizontal plane in which the said type-bars swing, so that said type-bars are more nearly horizontal, while the outer or forward type- ,bars are located at the greatest distance from said horizontal planes in which the type-heads swing and therefore have a greater inclination. By reason of'the- 0bque or inclined arrangement of the frame segments 4, 4, the upper bearings for the uniform distances from the u per en This construction permitstances points of attachment to pivot rods are arranged rogressively' greater distances from the said horizontal plane in which the type-heads swing and in connection with this feature of construction, the points of attachment of the type-arms to the said pivot rods are adjacent to and at said pivot rods, so that both t e said upper bearings for the ivot rods and the oints of attachment of film type-bars to the pivot rods are located at correspondingly increasing distances from the said plane in which the type-bars swing. The result of this construction is that the points of attachment of all of the type-bars to the pivot rods are brought nearthe upper bearings of said pivot rods, with the result that the type-rods are rigidly supported in operative position or, other words, are not liable to variation in position throughbend-ing or flexing of the pivot rods which might occur in the operatached to the pivot rods at greater distances from the upper bearings of the latter.

I claim as my invention:-

1. In a typewriting machine a of type-bars the pivotalaxes ofw distance from the printing point of the machine. v

2. In a typewriting machine, a) lurality of tyl'lpe-bars, the'pivotal axes of w 'ch are para el with each other and at uniform distances from the printingpoint of the machine, and the type-heads'of which are at uniform distances from their pivotal axes.

3. In a typewriting machine, a lurality of type-bars the pivotal axes of w 'ch are parallel with each other and at e ual disfrom the printing point, and t e typeheads of which are located and swing in the same plane.

4. In a typewritingmachine, a plurality of ty e-bars and pivot rods to which said typejars are attached, said pivot rods. being arranged with their axes of rotation at uniform distances from the printing oint of the machine, and the t e-heads eing at uniform distances from t pivot rods and located and adapted to swing in the same plane; the several typebars bein attached to the said pivot rods at unequa distances from the plane in which the type-heads swing.

p 5. In a typewriting machine, a lurality of t e bars, the pivotal axes of w u paral el with each other and at uniform distances from the printing point of the machine and the type-heads of which are at uniform distances from the said pivotal axes, and a segmental rest for the t e-heads arranged concentrically with sai printing point. 7 I

'6. "In a typewriting machine, a. lurality of type-bars and pivot rods to w 'ch the tion of the machine if the type-bars were atplllurality 'ch are parallel with each other and at a uniform 'ch are 7 e axes of the a, 9. In a typewriting machine, 3090f ty 1 tances frdm thesaid' plane.

:60 of type-bars, a plura ity of uprig at uniform distances ranged concentrically with respect to. said printing point and in the ang ar space hei tween the pivotal axesof the groups ofz type-bars. 4 v

3 8. Ina typewriting machine, twogro'ups of type-bars arranged at oppositesides-of the printing point with their pivotal axes at uniform distances from the said printin flpoint, se mental frame members provide I with bearings for type-bars, and a se mental ty e- -b'a1"'rest arranged concentrica y with said-pivotal point in the angular'space between'the forward ends of said segmental vframe member's. p p a la plurality e-bars and pivot rods to which said typear's,-are attached, the pivotal axes of 581d ivot rods being located atuniform distances from the printing point oi the machine and'the t pe-heads being at uniform distances from t e-ce'ntral axes of said pivot rods, segmental frame m'embers rovided with bearingsiorsaid pivot rods, t e hearings for ;the endsof the pivot rodsnearest .,the plane in which the type-heads swin' 1:510 being located at varying distances from sa1 plane andv the type-bars being attached to saidpivot rods at points adiacent to said j bearings and at corresponding y varying dis- 10.'In a typewritin machine, a lurality of type-bars, a plum 'ty of uprig t pivot rods; to which said type-bars are attached, said rods, being provided with rigidly at- ,tached crank'arms, a plurality of key-levers,

i 'a plurality pf horizontal rocks hafts located above the ke -levers, said rock-shafts bein provided wit 55, arms wlth the key-levers, and connecting -rods joining the upwardly extending crank-- arms with the crank-arms on the pivot rods of the type-bars;

11. In a typewritin machine, a lurality rods to which said ty e-bars are r idly attached,, said ivot r0 s being provi ed withrigidly vattac ed crank-arms, a plurality of key-levers, a plurality of rock shafts ar- .65 ranged. with their axes of rotation in the p from .said. printing point, and a segmental type-bar rest ar-fl .and' a pivot rod to which said typerod and an actuating spring I rigidly attached, horizonta I and upwardly extending crank-arms, con-w necting rods joining the horizontal crankone end of same vertical plane, and above the keylevers, said roe. -s hai'ts being providedeach with a forwardly extending rigid/arm which is connected with one of the key-levers and with an upwardly extendinggigid arm which is connected with the cran arm onone of thenpivot rods, said upwardly extending arms on therock-shafts having a rearwardly directed upper end portion which extends between two of the rock-shafts. above the rock-shaft to which'it-istttached.

12. In a typewriting machine, a plurality of type-bars, a plum ity of uprig rods to which said type-bars are attached, said, rods being prov ded-with rigidly attached crank arms, a plunalityotkey levors, a plurality of horizon tal rock-shafts located:

above-the ke -levers, said rock-shafts bein provided wit 'and upwardly extending crank-arms, con

' the horizontal crank-- necting rods joinin rigidly attached horizont'a arms 'with the keyovers, connecting rods] 101mm the u Wardly extendlng crank-arms with the cran r-arms on the pivot rods of the type bars, and springs applied severally to the said pivot rods for retracting the type-bars.-

-13. Ina typewriting machine, a typp-bar ar is attached, frame members'afi'ording bearing for said pivot rod, a'crank-arm on the pivot rigidly attached to one of'the said frame members extending longitudinally of the pivot rod in bearing contact with said rigid arm on said pivot rod.

14. In a typewriting machine, a type-bar and a' pivot rod to which said type-bar is attached,frame members afiording bearings for said pivot rod, a crank-arm on the pivot rod, an actuating spring for, the type-bar extending longitudinally of the pivot rod and provided with an eye at ,one end, a screw inserted in the frame-memberand engaging the eye on the spring and apin in the for the type-bar frame engaging the said springnnd holding the samein position to act on t c said cran arm of the pivot rod,

- 15. In a typewritmg machine, the com binationwith a type,bar and a ivot rod to which thesame is'.attached,-and rame members affording bearingsfor the opposite ends of said pivot rods,'an endwise sliding bearing pin having endwise engagement with said pivot rod, a spring a plied to said pinto throw the same towards t 1e ivot rody andla set-screw for holding said earing pm in its adjusted position.

16. In atypewriting machine, a type-bar, a pivot rod to whichsaid type-bar is attached, and framemembersnprovided with bearings for the opposite end of said pivot rod, one of said members being provided with two lugs rovidedv with lde apertures, a shouldere bearing pin in endwise alinement with the pivot rod, sliding endwise in said apertures, a coiled spring surrounding said rod between the shoulder thereof and the adjacent face of oneof said lugs, and a set-screw inserted in the frame for holding the bearing pin in its adjusted position.

'17. In a typewriting machine,'a type-bar, a pivot rod to which said type-bar is attached, and frame members provided with bearings for the opposite ends of said pivot rod, one of said bearings embracing a pivot screw in endwise alinement with the pivot rod, and the'other of said bearings embracing an endwise sliding, spring-pressed bearing pin also arranged in endwise aline'mentwith said pivot rod.

18. In a typewriting machine, a type-bar, a ivot rod to which said type-bar is at tac ed, and frame members provided with bearings for the opposite ends of said pivot rods, one of said bearings embracing a pivot screw in endwise alinement with said pivot rod and a set s'crew to hold said pivot screw from turning and the other of said bearings embracing an endwise sliding spring-pressed bearing pin, also in-endwise ahnement with the ivot rod, and a set-screw for holding said earing pin from movement.

19. In a typewriting machine, a type-bar, a type-head, and two attaching screws. for securing the type-head to the type-bar, said type-bar havingelongated apertures extendin transversely of the bar through which said attaching screws pass permitting thereby relative movement of said parts.

In testimony, that I claim the foregoing as my invention I aflix my signature in presence of two witnesses, this 3rd day of August A. D. 1905.

CHARLES S. NIOKERSO'N,

WVitnesses TAYLOR T. BROWN, E. R. WILKINS. 

